You could just delete the row with alpine or do a 3 line JS hook if you wanted to, it's quick and easy. That sounds a strange workflow though, it's generally better to make users wait for deletion.
isn't it funny that when you're trying to praise tech you like, all sorts of examples jump into mind, but when you try criticizing something you like - all that imagination vanishes and all existing examples can be dismissed as strange :)
I find it strange because that's not a behaviour I would use, but to each their own, it's the beauty of the web :).
If you really want to do it, you can add 3 lines on your project and that will work with any CRUD page you're building, I don't think that's unreasonable or difficult to do.
Edit:
Actually thinking about it, if you just made a form for that delete button and a phx-disable-with="" on the row it would probably work straight away without any JS hook.
surely you recognize that there is a gap in functionality between liveview and fully fledged frameworks that provide more granular control over ui interactions?
Like which other frameworks? You can code that example feature you pointed out quicker than in React if you want to. You have all the control you want in LiveView.
If you want a delete button per row, no code is needed and the phx-disable-with will work out of the box, if you want a global delete button on the top which deletes multiple rows front-end first before acknowledgement (with checkboxes + delete like in Gmail), 5 lines of JS maximum in a hook and you're set.
that you can't even acknowledge that there is a gap in functionality between liveview, a fairly opinionated framework for server side rendering and fully fledged client-side frameworks tells me this is not going to be a productive conversation, so i'm out, bye
Have you even used LiveView? It's not opinionated in any way, you can do whatever you want with it. It gives you extra features to remotely change pages but if you don't like having them you don't have to use them at all and can plug your favourite JS framework if you want to (or you can just use it for parts of the apps and not the rest if you want to).
I've worked for years with React and Angular and I don't really miss anything with a LiveView-based stack. LiveView features gives you 90% of what you want out of the box and for the rest it's fine having a bit of JS here and there to ensure a good experience.